SEA-FISHERIES LABORATORY. 389 



October 7th; these numbers were only exceeded in 1911 

 by the one enormous haul of 225,450 on July 18th. 



Temora longicornis. — The distribution of this species 

 again forms a simple normal curve, rising from an 

 average of 4 in January and February to 17,000 in May, 

 and sinking to zero in December. At the time of the 

 maximum, which is earlier, the numbers are higher than 

 in 1911. We find 50,400 on May 17th, followed by 

 83,400 on the 20th. 



Paracalanus 'parvus. — The distribution of Para- 

 calanus follows the same general lines as in previous 

 years, having its maximum in September (49,390 on 

 September 7th; 44,060 on October 24th) and its minimum 

 in spring and early summer, during which time it is 

 sometimes absent for periods of a few weeks. 



Acartia clausi. — High numbers occur from May to 

 October, some of the highest being 52,200 (May 20th), 

 41,950 (June 17th), and 59,490 (June 27th). The 

 maximum appears to be earlier than in previous years. 



Anomalocera pattersoni. — This species was again 

 very rare, being present in only 14 of the Bay gatherings 

 throughout the year. The greatest number were caught 

 in April (180 on the 10th) ; and Anomalocera is entirely 

 absent in six out of the twelve months. 



Centropages hamatus. — This form appears first in 

 March, increases to a maximum of 2,600 on May 17th, 

 and dies down again by November. 



Microcalanus pusillus. — The only records for 

 this species this year are as follows: — April 9th, 

 off Port St. Mary, coarse and fine nets together, 

 55 ; May 2nd, Bay, usual double haul, 30 ; August 7th, 

 Bay, vertical net, 15 ; and December 30th, coarse net, 

 30 — which is very remarkable considering that for the 

 last few years the maximum of this irregularly 



